2985661 has 16 divisors (see below), whose sum is σ = 3564288. Its totient is φ = 2448000.

The previous prime is 2985629. The next prime is 2985667. The reversal of 2985661 is 1665892.

It is a cyclic number.

It is not a de Polignac number, because 2985661 - 2⁵ = 2985629 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2985661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2985667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28936 + ... + 29038.

It is an arithmetic number, because the mean of its divisors is an integer number (222768).

2^2985661 is an apocalyptic number.

It is an amenable number.

2985661 is a deficient number, since it is larger than the sum of its proper divisors (578627).

2985661 is a wasteful number, since it uses less digits than its factorization.

2985661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 25920, while the sum is 37.

The square root of 2985661 is about 1727.9065368243. The cubic root of 2985661 is about 143.9948075545.

The spelling of 2985661 in words is "two million, nine hundred eighty-five thousand, six hundred sixty-one".